Home / 101,431.20-152,114.40-42,252.60

Finding the Fourth Proportional to 101,431.20, 152,114.40 and 42,252.60

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Solution

The fourth proportional to 101,431.20, 152,114.40 and 42,252.60 is: 63,365.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,431.20 : 152,114.40 = 42,252.60 : x
  2. Step 2: Convert to fraction form
    101,431.20/152,114.40 = 42,252.60/x
  3. Step 3: Cross multiply
    101,431.20x = 152,114.40 × 42,252.60
  4. Step 4: Simplify right side
    101,431.20x = 6,427,228,897.44
  5. Step 5: Solve for x
    x = 6,427,228,897.44/101,431.20
  6. Step 6: Final answer
    x = 63,365.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.